Abstract

Conical light pipes to condense radiation are attractive in their simplicity and low cost.

In addition, when using detectors having non-uniform surface response, the non-image forming characteristics of such channels are desirable. Through the use of a field lens, channels may be designed which condense the radiation through a given area to the smallest possible size. As viewed from the output end of the channel, this corresponds to achievement of the optimum f/number of 0.6. Reflection losses in the experimental model described increased the f/number to 0.77. The cone channel described has the further advantage that it is not receptive to stray light.

© 1952 Optical Society of America

Hyperbolic cone-channel condenser

H. P. Gush
Opt. Lett. 2(1) 22-24 (1978)

Notes on the Practice of Infrared Spectroscopy

R. C. Lord, R. S. McDonald, and Foil A. Miller
J. Opt. Soc. Am. 42(3) 149-159 (1952)

An Infrared Spectrograph for Use in the 40–150-Micron Spectral Region*

R. A. Oetjen, W. H. Haynie, W. M. Ward, R. L. Hansler, H. E. Schauwecker, and E. E. Bell
J. Opt. Soc. Am. 42(8) 559-566 (1952)

A Twelve-Inch Far Infrared Grating Spectrometer

T. King McCubbin and William M. Sinton
J. Opt. Soc. Am. 42(2) 113-115 (1952)

Fourier Treatment of Optical Processes

Peter Elias, David S. Grey, and David Z. Robinson
J. Opt. Soc. Am. 42(2) 127-134 (1952)